CN110924178A - Synthetic leather coating device - Google Patents
Synthetic leather coating device Download PDFInfo
- Publication number
- CN110924178A CN110924178A CN201911178327.7A CN201911178327A CN110924178A CN 110924178 A CN110924178 A CN 110924178A CN 201911178327 A CN201911178327 A CN 201911178327A CN 110924178 A CN110924178 A CN 110924178A
- Authority
- CN
- China
- Prior art keywords
- positioning
- telescopic rod
- positioning cylinder
- ring
- synthetic leather
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/0086—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique
- D06N3/0088—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof characterised by the application technique by directly applying the resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/086—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line a pool of coating material being formed between a roller, e.g. a dosing roller and an element cooperating therewith
- B05C1/0865—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line a pool of coating material being formed between a roller, e.g. a dosing roller and an element cooperating therewith the cooperating element being a roller, e.g. a coating roller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C1/00—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating
- B05C1/04—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length
- B05C1/08—Apparatus in which liquid or other fluent material is applied to the surface of the work by contact with a member carrying the liquid or other fluent material, e.g. a porous member loaded with a liquid to be applied as a coating for applying liquid or other fluent material to work of indefinite length using a roller or other rotating member which contacts the work along a generating line
- B05C1/0873—Controlling means responsive to conditions of the liquid or other fluent material, of the ambient medium, of the roller or of the work
- B05C1/0882—Controlling means responsive to conditions of the liquid or other fluent material, of the ambient medium, of the roller or of the work responsive to the distance between two rollers, e.g. between the coating roller and a backing roller
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C13/00—Means for manipulating or holding work, e.g. for separate articles
- B05C13/02—Means for manipulating or holding work, e.g. for separate articles for particular articles
Abstract
The invention discloses a synthetic leather coating device, which comprises an upper abutting mechanism, a lower rolling mechanism and a base, wherein the upper abutting mechanism is arranged on the base; the upper press roller is telescopically locked and connected to the lower side of the upper positioning plate, the lower coating roller is axially and slidably connected into the positioning cylinder after penetrating through the penetrating port of the material groove through the lower telescopic rod, the lower telescopic rod is upwards pressed by the elastic ring body in the positioning cylinder, so that the upper press roller and the lower coating roller can be tightly attached, when the positions of the upper press roller and the lower coating roller need to be adjusted, only the penetrating threaded rod needs to be telescopically moved on the positioning frame, and then the lower coating roller is locked through the clamping nut, so that the lower coating roller can be adapted to different coating liquid level heights, and the operation is very flexible.
Description
Technical Field
The invention relates to a synthetic leather coating device.
Background
Plastic articles that mimic the composition and structure of natural leather and can be used as a substitute material therefor. The impregnated non-woven fabric is usually used as a net layer, and the microporous polyurethane layer is used as a grain layer. The front surface and the back surface of the leather are very similar to leather, have certain air permeability and are closer to natural leather than common artificial leather; in the production process of the synthetic leather, oiling operation is needed, the cloth is sent to a coating machine, the heated leather slurry is coated on the cloth to form the synthetic leather, but a coating roller and a compression roller in the conventional synthetic leather coating device are fixedly connected, and adaptive adjustment cannot be carried out according to the height of the liquid level of the coating.
Disclosure of Invention
Aiming at the defects of the prior art, the invention solves the problems that: provides a synthetic leather coating device capable of adjusting the position.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a synthetic leather coating device comprises an upper abutting mechanism, a lower rolling mechanism and a base; the upper abutting mechanism comprises an upper positioning plate, an upper positioning frame and an upper press roller; the upper press roller is rotatably arranged on the lower side of the upper positioning frame; the upper end of the upper positioning frame is telescopically locked and connected below the upper positioning plate; the lower rolling mechanism comprises a lower coating roller, a lower positioning frame, a lower telescopic rod, a trough, a closed telescopic ring, a positioning cylinder and an elastic ring body; the lower coating roller is arranged below the upper pressing roller; the lower coating roller is rotatably arranged on the upper side of the lower positioning frame; the lower end of the lower positioning frame is provided with a lower telescopic rod; the middle of the bottom of the material groove is provided with a through port; the lower end of the lower telescopic rod penetrates through a penetrating port at the bottom of the trough and extends to the position below the trough; the closed telescopic ring is arranged on the upper side of the penetrating port; the periphery of the upper end of the closed telescopic ring is connected to the periphery of the lower telescopic rod in a curing manner, and the periphery of the lower end of the closed telescopic ring is connected to the periphery of the upper end of the penetrating port in a curing manner; the lower end of the lower telescopic rod extends into and is connected with the positioning cylinder; the lower end of the positioning cylinder is arranged on the base; the lower end of the lower telescopic rod is connected inside the positioning cylinder in a sliding manner along the axial direction of the positioning cylinder; an elastic ring body is arranged below the inner part of the positioning cylinder; the lower end of the elastic ring body is fixedly connected inside the positioning cylinder, and the upper end of the elastic ring body is pressed against the lower end of the lower telescopic rod.
Furthermore, the upper abutting mechanism also comprises a positioning frame, a cross-connecting threaded rod and a clamping nut; the positioning frame is arranged on the lower side of the upper positioning plate; the upper end of the cross-connecting threaded rod is in cross connection with the positioning frame; the lower end of the cross-connecting threaded rod is connected with the upper end of the upper connecting frame; the threaded rod is in threaded rotary connection with two clamping nuts; the two clamping nuts are respectively positioned on the upper side and the lower side of the positioning frame.
Further, the device also comprises a rotation driving mechanism; the rotation driving mechanism comprises a rotating plate, a rotating shaft, a clamping screw and a threaded plate; the bottom of the positioning cylinder is provided with a rotating plate; the lower end of the rotating plate is rotatably connected to the middle of the upper end of the base through a rotating shaft; two sides of the upper end of the base are respectively provided with a thread plate; the thread plates are respectively connected with a clamping screw in a threaded manner; and the two sides of the rotating plate are respectively clamped and fixed through clamping screws.
Furthermore, the end parts of the clamping screw rods on the two sides of the rotating plate are respectively provided with a pressing block; the outer side surface of the pressing block is of an arc-shaped structure.
Furthermore, the periphery of the lower end of the lower telescopic rod is provided with a butting ring; the upper end of the elastic ring body is pressed against the lower end face of the abutting ring around the lower end of the lower telescopic rod.
Furthermore, a cylindrical cavity is arranged inside the positioning cylinder; wear-resisting rings in a circular structure are arranged around the abutting ring; the abutting ring is abutted and slidably connected to the inside of the positioning cylinder through the wear-resistant ring; the wear-resistant ring is made of polytetrafluoroethylene materials.
Furthermore, the trough is in a conical structure with a large top and a small bottom.
Further, the closed telescopic ring is made of a corrugated pipe material.
The invention has the advantages of
1. The upper press roller is telescopically locked and connected to the lower side of the upper positioning plate, the lower coating roller is axially and slidably connected into the positioning cylinder after penetrating through the penetrating port of the material groove through the lower telescopic rod, the lower telescopic rod is upwards pressed by the elastic ring body in the positioning cylinder, so that the upper press roller and the lower coating roller can be tightly attached, when the positions of the upper press roller and the lower coating roller need to be adjusted, only the penetrating threaded rod needs to be telescopically moved on the positioning frame, and then the lower coating roller is locked through the clamping nut, so that the lower coating roller can be adapted to different coating liquid level heights, and the operation is very flexible.
2. The upper coating roller and the lower coating roller are installed, the phenomenon that the longitudinal upper position and the longitudinal lower position are not aligned sometimes occurs, the disassembly and the reinstallation are very complicated, a rotation driving mechanism is additionally arranged, the lower end of a positioning cylinder is rotationally connected to a base through a rotating plate and a rotating shaft, the rotating plate is pushed to rotate through the rotary clamping of two clamping screw rods, the positioning cylinder and the lower coating roller can be driven to rotate, the axial position of the lower coating roller can be finely adjusted, and the purpose of better attaching and aligning with the upper coating roller is achieved.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a partially enlarged schematic view of the lower rolling mechanism of the present invention.
Fig. 3 is an enlarged schematic view of the rotary drive mechanism of the present invention.
FIG. 4 is a schematic view showing the butt joint structure of the upper press roll and the lower paint roll according to the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 4, a synthetic leather coating device comprises an upper pressing mechanism 2, a lower rolling mechanism 3 and a base 1. The upper abutting mechanism 2 comprises an upper positioning plate 21, an upper positioning frame 25 and an upper press roller 26; the upper press roller 26 is rotatably arranged at the lower side of the upper positioning frame 25; the upper end of the upper positioning frame 25 is telescopically locked and connected below the upper positioning plate 21; the lower rolling mechanism 3 comprises a lower coating roller 31, a lower positioning frame 32, a lower telescopic rod 34, a trough 33, a closed telescopic ring 35, a positioning cylinder 36 and an elastic ring body 37; the lower coating roller 31 is arranged below the upper press roller 26; the lower coating roller 31 is rotatably arranged on the upper side of the lower positioning frame 32; the lower end of the lower positioning frame 32 is provided with a lower telescopic rod 34; the middle of the bottom of the trough 33 is provided with a through port 331; the lower end of the lower telescopic rod 34 passes through the through port 331 at the bottom of the trough 33 and extends to the lower part of the trough 33; the closed telescopic ring 35 is arranged on the upper side of the penetration port 331; the periphery of the upper end of the closed telescopic ring 35 is connected to the periphery of the lower telescopic rod 34 in a curing manner, and the periphery of the lower end of the closed telescopic ring 35 is connected to the periphery of the upper end of the penetrating port 331 in a curing manner; the lower end of the lower telescopic rod 34 extends into and is connected with the positioning cylinder 36; the lower end of the positioning cylinder 36 is arranged on the base 1; the lower end of the lower telescopic rod 34 is connected inside the positioning cylinder 36 in a sliding manner along the axial direction of the positioning cylinder 36; an elastic ring body 37 is arranged below the inner part of the positioning cylinder 36; the lower end of the elastic ring body 37 is fixedly connected inside the positioning cylinder 36, and the upper end of the elastic ring body 37 is pressed against the lower end of the lower telescopic rod 34.
As shown in fig. 1 to 4, it is further preferable that the upper pressing mechanism 2 further includes a positioning frame 22, a threaded rod 23, and a clamping nut 24; the positioning frame 22 is arranged at the lower side of the upper positioning plate 21; the upper end of the cross-connecting threaded rod 23 is connected in the positioning frame 22 in a cross-connecting mode; the lower end of the cross-connecting threaded rod 23 is connected with the upper end of the upper connecting frame 25; the threaded rod 23 is connected with two clamping nuts 24 in a threaded and rotating manner; the two clamping nuts 24 are respectively located at the upper and lower sides of the positioning frame 22. Further preferably, the device also comprises a rotation driving mechanism 4; the rotation driving mechanism 4 comprises a rotation plate 41, a rotation shaft 42, a clamping screw 43 and a thread plate 44; the bottom of the positioning cylinder 36 is provided with a rotating plate 41; the lower end of the rotating plate 41 is rotatably connected to the middle of the upper end of the base 1 through a rotating shaft 42; two sides of the upper end of the base 1 are respectively provided with a thread plate 44; the thread plates 44 are respectively threaded with a clamping screw 43; the two sides of the rotating plate 41 are respectively clamped and fixed by clamping screws 43. Further, the end parts of the clamping screws 43 on both sides of the rotating plate 41 are respectively provided with a pressing block 431; the outer side surface of the pressing block 431 is of an arc-shaped structure. Further, a butting ring 341 is arranged around the lower end of the lower telescopic rod 34; the upper end of the elastic ring body 37 is pressed against the lower end surface of the abutting ring 341 around the lower end of the lower telescopic rod 34. Further, a cylindrical cavity is arranged inside the positioning cylinder 36; wear-resisting rings 342 in a circular ring structure are arranged around the abutting ring 341; the abutting ring 341 is connected in the positioning cylinder 36 in an abutting and sliding manner through a wear-resisting ring 342; the wear ring 342 is made of teflon. More preferably, the trough 33 has a tapered structure with a large top and a small bottom. Further, the closed expansion ring 35 is made of a bellows material.
The traditional connection mode of the upper press roll 26 and the lower coating roll 31 is changed, the upper press roll 26 is telescopically locked and connected to the lower side of the upper positioning plate 21, the lower coating roll 31 is axially and slidably connected into the positioning cylinder 36 after penetrating through the penetrating opening 331 of the material groove 33 through the lower telescopic rod 34, and the lower telescopic rod 34 is upwards pressed by the elastic ring body 37 in the positioning cylinder 36, so that the upper press roll 26 and the lower coating roll 31 can be tightly attached, when the positions of the upper press roll 26 and the lower coating roll 31 need to be adjusted, only the penetrating threaded rod 23 needs to be telescopically moved on the positioning frame 22, and then the upper press roll and the lower coating roll 31 are locked through the clamping nut 24, so that the lower coating roll 31 can be adapted to different coating liquid level heights, and the operation is very flexible. The upper press roll 26 and the lower coating roll 31 of the invention are installed, sometimes the phenomenon of longitudinal up-down position misalignment sometimes occurs, so the disassembly and reinstallation are very complicated, the invention adds the rotation driving mechanism 4, the lower end of the positioning cylinder 36 is rotationally connected on the base 1 through the rotating plate 41 and the rotating shaft 42, so the rotating plate 41 is pushed to rotate through the rotary clamping of the two clamping screws 43, so the positioning cylinder 36 and the lower coating roll 31 can be driven to rotate, so the axial position of the lower coating roll 31 can be finely adjusted, and the purpose of better fitting and aligning with the upper press roll 26 is achieved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A synthetic leather coating device is characterized by comprising an upper abutting mechanism, a lower rolling mechanism and a base; the upper abutting mechanism comprises an upper positioning plate, an upper positioning frame and an upper press roller; the upper press roller is rotatably arranged on the lower side of the upper positioning frame; the upper end of the upper positioning frame is telescopically locked and connected below the upper positioning plate; the lower rolling mechanism comprises a lower coating roller, a lower positioning frame, a lower telescopic rod, a trough, a closed telescopic ring, a positioning cylinder and an elastic ring body; the lower coating roller is arranged below the upper pressing roller; the lower coating roller is rotatably arranged on the upper side of the lower positioning frame; the lower end of the lower positioning frame is provided with a lower telescopic rod; the middle of the bottom of the material groove is provided with a through port; the lower end of the lower telescopic rod penetrates through a penetrating port at the bottom of the trough and extends to the position below the trough; the closed telescopic ring is arranged on the upper side of the penetrating port; the periphery of the upper end of the closed telescopic ring is connected to the periphery of the lower telescopic rod in a curing manner, and the periphery of the lower end of the closed telescopic ring is connected to the periphery of the upper end of the penetrating port in a curing manner; the lower end of the lower telescopic rod extends into and is connected with the positioning cylinder; the lower end of the positioning cylinder is arranged on the base; the lower end of the lower telescopic rod is connected inside the positioning cylinder in a sliding manner along the axial direction of the positioning cylinder; an elastic ring body is arranged below the inner part of the positioning cylinder; the lower end of the elastic ring body is fixedly connected inside the positioning cylinder, and the upper end of the elastic ring body is pressed against the lower end of the lower telescopic rod.
2. A synthetic leather coating apparatus according to claim 1, wherein the upper pressing mechanism further includes a positioning frame, a cross-connecting threaded rod, and a clamping nut; the positioning frame is arranged on the lower side of the upper positioning plate; the upper end of the cross-connecting threaded rod is in cross connection with the positioning frame; the lower end of the cross-connecting threaded rod is connected with the upper end of the upper connecting frame; the threaded rod is in threaded rotary connection with two clamping nuts; the two clamping nuts are respectively positioned on the upper side and the lower side of the positioning frame.
3. A synthetic leather coating apparatus as defined in claim 1, further comprising a rotational drive mechanism; the rotation driving mechanism comprises a rotating plate, a rotating shaft, a clamping screw and a threaded plate; the bottom of the positioning cylinder is provided with a rotating plate; the lower end of the rotating plate is rotatably connected to the middle of the upper end of the base through a rotating shaft; two sides of the upper end of the base are respectively provided with a thread plate; the thread plates are respectively connected with a clamping screw in a threaded manner; and the two sides of the rotating plate are respectively clamped and fixed through clamping screws.
4. A synthetic leather coating apparatus according to claim 3, wherein the ends of the clamping screws on both sides of the rotating plate are respectively provided with a pressing block; the outer side surface of the pressing block is of an arc-shaped structure.
5. A synthetic leather coating apparatus as defined in claim 1, wherein the lower end of the lower telescopic rod is provided with a butting ring around; the upper end of the elastic ring body is pressed against the lower end face of the abutting ring around the lower end of the lower telescopic rod.
6. A synthetic leather coating apparatus according to claim 5, wherein the positioning cylinder is internally provided with a cylindrical cavity; wear-resisting rings in a circular structure are arranged around the abutting ring; the abutting ring is abutted and slidably connected to the inside of the positioning cylinder through the wear-resistant ring; the wear-resistant ring is made of polytetrafluoroethylene materials.
7. A synthetic leather coating apparatus as defined in claim 1, wherein the trough is a tapered structure with a large top and a small bottom.
8. A synthetic leather coating apparatus as defined in claim 1, wherein the closed telescopic ring is made of a bellows material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911178327.7A CN110924178A (en) | 2019-11-27 | 2019-11-27 | Synthetic leather coating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911178327.7A CN110924178A (en) | 2019-11-27 | 2019-11-27 | Synthetic leather coating device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110924178A true CN110924178A (en) | 2020-03-27 |
Family
ID=69852146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911178327.7A Pending CN110924178A (en) | 2019-11-27 | 2019-11-27 | Synthetic leather coating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110924178A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112359607A (en) * | 2020-10-23 | 2021-02-12 | 东台市富安合成材料有限公司 | Synthetic leather rolling press device |
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| CN206889234U (en) * | 2017-05-27 | 2018-01-16 | 江苏环力科技发展股份有限公司 | A kind of water pump controller of convenient control |
| CN207918980U (en) * | 2018-01-23 | 2018-09-28 | 福建清景铜箔有限公司 | A kind of foil machine winding balance control device |
| CN208920787U (en) * | 2018-10-11 | 2019-05-31 | 东台市富安合成材料有限公司 | A kind of cleaning type synthetic leather drying unit |
| CN209010767U (en) * | 2018-10-11 | 2019-06-21 | 东台市富安合成材料有限公司 | A kind of flexible channelling water synthetic leather Embosser |
| CN209020661U (en) * | 2018-10-22 | 2019-06-25 | 江苏东台实力工业材料有限公司 | A kind of flexible fine adjustment type adhesive tape coating device |
-
2019
- 2019-11-27 CN CN201911178327.7A patent/CN110924178A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206889234U (en) * | 2017-05-27 | 2018-01-16 | 江苏环力科技发展股份有限公司 | A kind of water pump controller of convenient control |
| CN207918980U (en) * | 2018-01-23 | 2018-09-28 | 福建清景铜箔有限公司 | A kind of foil machine winding balance control device |
| CN208920787U (en) * | 2018-10-11 | 2019-05-31 | 东台市富安合成材料有限公司 | A kind of cleaning type synthetic leather drying unit |
| CN209010767U (en) * | 2018-10-11 | 2019-06-21 | 东台市富安合成材料有限公司 | A kind of flexible channelling water synthetic leather Embosser |
| CN209020661U (en) * | 2018-10-22 | 2019-06-25 | 江苏东台实力工业材料有限公司 | A kind of flexible fine adjustment type adhesive tape coating device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112359607A (en) * | 2020-10-23 | 2021-02-12 | 东台市富安合成材料有限公司 | Synthetic leather rolling press device |
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Application publication date: 20200327 |
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